1.1 This standard has been prepared for use by the designer, specifier, and installer of RBS (radiant barrier systems) for use in building construction. The scope is limited to recommendations relative to the use and installation of RBS including a surface(s) normally having a far-infrared emittance of 0.1 or less, such as metallic foil or metallic deposits unmounted or mounted on substrates. Some examples that this standard is intended to address include: (1) low emittance surfaces in